import { EventEmitter } from 'events';
import { Embeddings } from './embeddings.js';
export interface SearchHit {
    id: string;
    score: number;
    text: string;
    metadata?: Record<string, unknown>;
}
export interface IndexStats {
    count: number;
    shards: number;
    avgNeighbors: number;
    ollamaModel: string | null;
    ollamaPullState: 'idle' | 'pulling' | 'complete' | 'failed';
    approxBytes: number;
}
export declare class EmbeddingsV2 extends EventEmitter {
    private docs;
    private entryPoint;
    private nextShard;
    private currentShardBytes;
    private initialized;
    private pullState;
    private readonly embeddings;
    private readonly M;
    private readonly efConstruct;
    private readonly efSearch;
    constructor(opts?: {
        embeddings?: Embeddings;
        M?: number;
        efConstruct?: number;
        efSearch?: number;
    });
    init(): Promise<void>;
    /** Index a document. Replaces any prior doc with the same id. */
    addDocument(id: string, text: string, metadata?: Record<string, unknown>): Promise<void>;
    /** Approximate top-K nearest neighbors by cosine similarity. */
    search(query: string, topK?: number): Promise<SearchHit[]>;
    /** Remove a document from the index. */
    delete(id: string): Promise<boolean>;
    count(): number;
    stats(): IndexStats;
    flush(): Promise<void>;
    private linkNode;
    private detachNode;
    private greedySearch;
    private dotById;
    private loadShards;
    private pickShardFor;
    private shardCount;
    private persistShard;
    private shardBytes;
    private approxBytes;
    private maybeAutoPull;
}
export declare function getEmbeddingsV2(): EmbeddingsV2;
export declare function resetEmbeddingsV2ForTests(): void;
//# sourceMappingURL=embeddings-v2.d.ts.map